1
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Is there a better way to do this? I'm kinda ending up having a lot of if statements.

if params[:custom_url] || params[:user_id]
    if !params[:user_id].blank?
      @user = User.find(params[:user_id]).first
      @url = @user.custom_url
    else
      @url = params[:custom_url]
      @user = User.where(:custom_url => @url).first
    end
end
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  • 1
    \$\begingroup\$ instead of !params[:user_id].blank?, you can write params[:user_id].present? which reads more nicely. \$\endgroup\$ – rubiii Aug 11 '12 at 12:23
1
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I typically chain scopes together like this:

Model:

def self.by_user_and_url(user_id, custom_url)
  by_user(user_id).by_custom_url(custom_url)
end

def self.by_user(user_id)
  user_id ? where(user_id: user_id) : scoped
end

def self.by_custom_url(custom_url)
  custom_url ? where(custom_url: custom_url) : scoped
end

Controller:

if params[:custom_url].present? || params[:user_id].present?
  @user = User.by_user_and_url(params[:user_id], params[:custom_url]).first
end

I'm not sure why you had two instance variables. The url can be pulled from the @user instance variable if you need it in your view.

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1
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Not a big fan of case..when:

@user = User.find_first(params[:user_id]) if params[:user_id]
@user ||= User.find_by_custom_url(@url)

@url = params[:custom_url] || @user.custom_url
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  • 2
    \$\begingroup\$ At line 2, @url is going to be nil, so there's no sense using it as a param. \$\endgroup\$ – Pavling Aug 11 '12 at 20:32
  • \$\begingroup\$ Line 1, wouldn't it be better to use if params[:user_id].present? \$\endgroup\$ – deiga Feb 11 '13 at 19:32

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